summaryrefslogtreecommitdiff
path: root/src/glx/apple/apple_visual.c
diff options
context:
space:
mode:
authorJeremy Huddleston <jeremyhu@apple.com>2010-04-01 11:01:31 -0700
committerJeremy Huddleston <jeremyhu@apple.com>2010-04-01 12:33:45 -0700
commit0594cf70883b64692ba617d85f4f9b4e636e5c2b (patch)
tree4f0180af9c072c393e3d6270825953bf46a9152e /src/glx/apple/apple_visual.c
parent86a7978d37393ee34f876569ac06ffdb8d7289ae (diff)
apple: Initial import of libGL for OSX from AppleSGLX svn repository.
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Diffstat (limited to 'src/glx/apple/apple_visual.c')
-rw-r--r--src/glx/apple/apple_visual.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/src/glx/apple/apple_visual.c b/src/glx/apple/apple_visual.c
new file mode 100644
index 0000000000..e80914741e
--- /dev/null
+++ b/src/glx/apple/apple_visual.c
@@ -0,0 +1,144 @@
+/*
+ Copyright (c) 2008, 2009 Apple Inc.
+
+ Permission is hereby granted, free of charge, to any person
+ obtaining a copy of this software and associated documentation files
+ (the "Software"), to deal in the Software without restriction,
+ including without limitation the rights to use, copy, modify, merge,
+ publish, distribute, sublicense, and/or sell copies of the Software,
+ and to permit persons to whom the Software is furnished to do so,
+ subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
+ HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ DEALINGS IN THE SOFTWARE.
+
+ Except as contained in this notice, the name(s) of the above
+ copyright holders shall not be used in advertising or otherwise to
+ promote the sale, use or other dealings in this Software without
+ prior written authorization.
+*/
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <GL/gl.h>
+#include <OpenGL/OpenGL.h>
+#include <OpenGL/CGLContext.h>
+#include <OpenGL/CGLRenderers.h>
+#include "apple_cgl.h"
+#include "apple_visual.h"
+#include "apple_glx.h"
+#include "glcontextmodes.h"
+
+enum
+{
+ MAX_ATTR = 60
+};
+
+/*mode is a __GlcontextModes*/
+void
+apple_visual_create_pfobj(CGLPixelFormatObj * pfobj, const void *mode,
+ bool * double_buffered, bool * uses_stereo,
+ bool offscreen)
+{
+ CGLPixelFormatAttribute attr[MAX_ATTR];
+ const __GLcontextModes *c = mode;
+ int numattr = 0;
+ GLint vsref = 0;
+ CGLError error = 0;
+
+ if (offscreen) {
+ apple_glx_diagnostic
+ ("offscreen rendering enabled. Using kCGLPFAOffScreen\n");
+
+ attr[numattr++] = kCGLPFAOffScreen;
+ attr[numattr++] = kCGLPFAColorSize;
+ attr[numattr++] = 32;
+ }
+ else if (getenv("LIBGL_ALWAYS_SOFTWARE") != NULL) {
+ apple_glx_diagnostic
+ ("Software rendering requested. Using kCGLRendererGenericFloatID.\n");
+ attr[numattr++] = kCGLPFARendererID;
+ attr[numattr++] = kCGLRendererGenericFloatID;
+ }
+ else if (getenv("LIBGL_ALLOW_SOFTWARE") != NULL) {
+ apple_glx_diagnostic
+ ("Software rendering is not being excluded. Not using kCGLPFAAccelerated.\n");
+ }
+ else {
+ attr[numattr++] = kCGLPFAAccelerated;
+ }
+
+ /*
+ * The program chose a config based on the fbconfigs or visuals.
+ * Those are based on the attributes from CGL, so we probably
+ * do want the closest match for the color, depth, and accum.
+ */
+ attr[numattr++] = kCGLPFAClosestPolicy;
+
+ if (c->stereoMode) {
+ attr[numattr++] = kCGLPFAStereo;
+ *uses_stereo = true;
+ }
+ else {
+ *uses_stereo = false;
+ }
+
+ if (c->doubleBufferMode) {
+ attr[numattr++] = kCGLPFADoubleBuffer;
+ *double_buffered = true;
+ }
+ else {
+ *double_buffered = false;
+ }
+
+ attr[numattr++] = kCGLPFAColorSize;
+ attr[numattr++] = c->redBits + c->greenBits + c->blueBits;
+ attr[numattr++] = kCGLPFAAlphaSize;
+ attr[numattr++] = c->alphaBits;
+
+ if ((c->accumRedBits + c->accumGreenBits + c->accumBlueBits) > 0) {
+ attr[numattr++] = kCGLPFAAccumSize;
+ attr[numattr++] = c->accumRedBits + c->accumGreenBits +
+ c->accumBlueBits + c->accumAlphaBits;
+ }
+
+ if (c->depthBits > 0) {
+ attr[numattr++] = kCGLPFADepthSize;
+ attr[numattr++] = c->depthBits;
+ }
+
+ if (c->stencilBits > 0) {
+ attr[numattr++] = kCGLPFAStencilSize;
+ attr[numattr++] = c->stencilBits;
+ }
+
+ if (c->sampleBuffers > 0) {
+ attr[numattr++] = kCGLPFAMultisample;
+ attr[numattr++] = kCGLPFASampleBuffers;
+ attr[numattr++] = c->sampleBuffers;
+ attr[numattr++] = kCGLPFASamples;
+ attr[numattr++] = c->samples;
+ }
+
+ attr[numattr++] = 0;
+
+ assert(numattr < MAX_ATTR);
+
+ error = apple_cgl.choose_pixel_format(attr, pfobj, &vsref);
+
+ if (error) {
+ fprintf(stderr, "error: %s\n", apple_cgl.error_string(error));
+ abort();
+ }
+}